The "comic book" credits for pg.1-3 give P.Jenkins as writer, he is not mentioned on the intro page, though; the cover of the comic "Startling Stories feat. The Sentry" is the alternate cover by JRSr; There is one additional page with the recap/intro the credits.

BT/MB/JP are regular artists, all others are credited as guest artists, see Details

My uneducated guess is that the pages featuring the individual Avengers during the fight are drawn by the guest art teams that are familiar with the character. Also, it fits the order in which the guest artists are credited.Double-splash page Avengers vs. Hood's gang by Bryan Hitch and Rain BeredoIron Fist page by David Aja and Dave Stewart (The Immortal Iron Fist)Luke Cage page by Michael Gaydos (Alias)Ronin and Mockingbird page by David and Álvaro López (New Avengers: The Reunion)Spider-Woman page by Alex Maleev (Spider-Woman (IV))Spider-Man page by Steve McNiven, Dexter Vines and Morry Hollowell (The Amazing Spider-Man (III) at the beginning of Brand New Day)Wolverine page by Leinil Yu, Mark Morales and Dave McCaig (The New Avengers (I))Captain America page by Steve Epting (Captain America (V))Ms. Marvel page by Greg Horn (many covers for Ms. Marvel (II))